Rotary engine.



I. L. EASTMAN.

ROTARY ENGINE. APPLICATION FiLED JUNE (8. 1915. I

Patented Oct. 9,1917.

2 SHEETS-SHEET l.

314mm mw attorney,

I. L. EASTMAN.

ROTARY ENGINE.

APPLICATION FILED JUNE 18, 1915.

IvAN L. Easter/ran, or LIMA, oHIo.

ROTARY ENGINE.

- T0 all whom it may concern:

rotary engine wherein either steam, water, air, or gas may .be usedto propel the engine, which is adaptable fora multipliclty of uses because of its simplicity and 'lightness of constructlon, 1ts efficiency, and 1ts economy both in manufacture and use.

.My device may also be used singly or as a multiple cylinder motor, pump,- or fluid compressor.

Other objects of this invention not at this time more particularly enumerated, will be clearly understood from the detailed description and drawings forming a partjof this specification.

Furthermore, this invention consists in the novel arrangements and combination of, parts more particularly described in the following specification and embodied in the claim appended hereunto and forming a part of this application.

Referring now to the drawings, which are merely illustrative of my invention,

Figure 1 is a side elevation of my improved rotary engine. 7 r

Fig. 2 is a horizontal sectional view taken on the line 2-2 of Fig. 1.

Fig. 3 is a side elevation with coverplate removed showing the arrangement of the working parts. 7

Fig. 4: is a vertical sectional view taken on line l4 of Fig. 3.

Fig. 5 is a detail sectional view taken on line 5-5 of Fig. 3 showing the construction of the piston and rotor connection.

Referring further to the drawings, wheree in similar reference characters designate similar parts throughout the respective views, 1 designates generally the stator of my engine, formed of circular outerplates 2, and a ring member 3, interposed between said plates and bolted thereto at 4 seats to make a tight casing- A shaft bearing 5 is formed in they axial center of said outer plates, said bearing being adapted to receive a shaft 6. An inlet pipe 7 ismounted The object of my invention is to provide a Specification of Letters Patent. YPatented Oct. 9, 191?.

Application filed J'u'ne 18,1915. Serial ma mas.- v I l at a certain point upon the ring member '3 and an outlet pipe 8 is mounted upon said .ring member,-oppositely disposed with respect to said inlet pipe Adrum-bearing 9 is formed upon said outer-plates, spaced apart circumferentially' and inwardlywithrespectto said shaft bearing 5, and eccentrically disposed'with' respect to the axial center of said plates. A hollow rotor 10 consists of "a drum,

cross-shaped in cross section, the ends of the outwardly extending arms '11 being open and the said arms being coextensive in circumference with the inner wall of the drum bearing 9. The said'rotor therefore revolves Y within its bearing concentric with its own axis, but eccentric with respect to theaxis of the'shaft 6. '-'The peripheryof 'said'rotor is adapted to maintain a position in close proximity to the innercircumference of said stator at a point intermediate said inlet and saidoutlet.-.

'At acertain point upon the rim of said rotor, and transversely thereof, inwardly extendingflanges 12 are formed, each- 0f said flanges being formed in an arc with the concavities thereofv oppositely disposed, and.

spaced apart along the length thereof. An

oscillating block 13 is mounted adjacent the concave walls of said flanges12, said block being slotted along the length thereof adapted to receive 'a T-shaped piston 14 fixed at its smaller end 15 within the shaft 6 and formed with a bifurcation 16 at the T-head end thereof.- A. packing 17 is mounted within said bifurcation 16. The

said piston 14: is of such a lengththat the outer end thereof will fit snuglyagainst the inner wall of said stator.

From the foregoing description, it is obalways be in engagement with the inner wall of the stator, and thatas the shaft and rotor revolve in unison, the relative posi tion of said piston within the block will vary during the rotation process, .and the block will, at the same time, oscillate within slight'limits upon its ownaxis, the T-head:

of the piston being'accommodated in the 1 T-shaped. slot of the block when forcedthereinto by restriction of the space between the stator and the. rotor owing to theeceentrio rotation of the latter. It is also apparent that any motive fluid entering the port of the inlet pipe 7 will act upon the piston vious that the T-head end of the piston will to rotate it and the rotor until said fluid escapes through the outlet 8, thus serving as a motor. I

When power is applied directly to the shaft for the purpose of using my device as a pump or fluid compressor, the piston will act to draw in the fluid, through the inlet 7 and force it out through the outlet 8.

The utility, adaptability, and advantages of my improved form of rotary engines being obvious, it is unnecessary to further enlarge upon the same herein.

Having now described and pointed out the new and useful features of my invention, I do not limit myself to'the shape of certain parts, where the shape is not essential, nor do I restrict'myself to the exact details of construction shown and described, but mean and intend to claim all equivalents and variations thereof not departing in principle from my invention, and falling within the purview of the appended claim.

What I claim as my invention and desire to secure by Letters Patent is:

In a device of the character described the combination of a stator comprising a pair of circular outer plates, a ring member interposed between said plates and secured thereto adjacent their outer periphery, a shaft bearing formed in the axial center of the plates, a shaft mounted in said bearings, an

inlet and outlet pipe mounted on said ring,

a drum bearing mounted on the plates eccentrically disposed relative to the axial center thereof, a rotor mounted within the stator having an opening in the peripheral wall thereof, arms formed on the rotor coextensive with the drum bearing, the ends of the arms being open, said rotor revolving concentric with its own axis and eccentric with respect to the axis of the shaft, the peripheral wall of the rotor being adapted to maintain a position in close proximity to the inner circumference of said stator at a point intermediate said inlet and outlet, a cylindrical bearing block having a longitudinal groove coextensive with the outer walls thereof and a radial groove extending from the longitudinal groove to the peripheral wall of the opposite side of said block, a piston rod mounted in said shaft and'extending through said radial groove, a transverse head formed on the end of the piston extending through said groove, the walls of the longitudinally extending groove providing strengthening means for the piston rod also preventing escape of the motive fluid.

In testimony whereof I afiix my signature hereto.

IVAN L. EASTMAN.

Copies of this patent may be obtained for five cents each, by addressing the commissioner of Patents,

Washington, D. 83, 

